6x+3=9x2

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Solution for 6x+3=9x2 equation:



6x+3=9x^2
We move all terms to the left:
6x+3-(9x^2)=0
determiningTheFunctionDomain -9x^2+6x+3=0
a = -9; b = 6; c = +3;
Δ = b2-4ac
Δ = 62-4·(-9)·3
Δ = 144
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{144}=12$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(6)-12}{2*-9}=\frac{-18}{-18} =1 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(6)+12}{2*-9}=\frac{6}{-18} =-1/3 $

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